Pumps – Expansion and contraction of pump fluid
Patent
1979-06-25
1981-08-04
Croyle, Carlton R.
Pumps
Expansion and contraction of pump fluid
62430, 62467PR, 62510, 165 39, F04B 1924
Patent
active
042819695
ABSTRACT:
A cell for pumping a fluid is provided, wherein the fluid is alternately heated and cooled by a transfer medium, and comprises a fluid-type chamber which communicates with a source of fluid via a one-way valve and with a sink for the fluid via another one-way valve, which valves allow flow only in the direction from the source into the sink. Heated thermal medium and chilled thermal medium are alternately admitted from respective sources to a heated transfer jacket about the chamber so that at least some of the fluid in the chamber is alternately cooled to reduce pressure to draw fluid from the fluid source via the one-way valve, and is heated to increase pressure to discharge pumped fluid to the sink via the other one-way valve. Where the pumped fluid is a gas, the cell pumps, or more specifically compresses, the gas and pumps it toward the sink. Where the pumped fluid is a liquid, the chamber arrangement is such that a gaseous fluid therein is prevented from passing through a liquid fluid therein, and is thus prevented from leaving the chamber upon increase of pressure of the gaseous fluid.
REFERENCES:
patent: 3195806 (1965-07-01), Bowen et al.
patent: 3732690 (1973-05-01), Meijer
patent: 3898017 (1975-08-01), Mandroian
patent: 4165569 (1979-08-01), Mackay
patent: 4165952 (1979-08-01), Bennett
patent: 4185979 (1980-01-01), Woolley
Brown Boniard I.
Croyle Carlton R.
Look Edward
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